Here are some subject lines you can use for a shipment confirmation email:

1. Your Order Has Shipped!
2. Great News: Your Package is on the Way!
3. {store_name}: Your Order is En Route!
4. Your Shipment Confirmation for Order #[Order Number]
5. Get Ready, {firstname}: Your Order is Coming!
6. Tracking Information for Your Recent Purchase
7. Your {product_name} is on its Way!
8. {store_name}: Your Order has Left the Building!
9. The Wait is Over: Your {product_name} is on its Way!
10. {firstname}, Your Order is About to Arrive!
11. Unwrap Your Excitement: Your Order has Shipped!
12. {product_name} Adventure: Your Order is on the Move!
13. {store_name} Brings You Good News: Your Order has Shipped!
14. {firstname}, Get Ready to Unbox Your {product_name}!
15. The Journey Begins: Your Order is on its Way to You!
16. Your {product_name} is Taking Flight: Shipment Confirmation!

Here are some shipment confirmation email subject lines with emoticons:

1. 🚚 Your Order is on the Move!
2. 🎁 Your Package is on its Way to You!
3. 📦 {store_name}: Your Order is En Route!
4. 🛫 Your {product_name} is Taking Flight!
5. 🚀 Blast Off: Your Shipment Confirmation for Order #[Order Number]!
6. 🤩 {firstname}, Your Order is About to Arrive!
7. 🙌 Get Ready, {firstname}: Your Order is Coming!
8. 🚀 {store_name}: Your Order has Left the Building!
9. 🎉 Woohoo! Your Order Has Shipped!
10. 🚛 The Delivery Train is On Its Way: Your Order Has Shipped!
11. 📬 You’ve Got Mail! Your Package is on the Way!
12. 🚚 {firstname}, Your Order is on the Move!
13. 🚀 Lift-Off: Your [Product Name] is En Route!
14. 📦 Your {product_name} is Boxed Up and Ready to Go!
15. 🎁 {store_name}: Your Order is Wrapped and on the Way!
16. 🚀 Blast Off into the Weekend with Your Shipment Confirmation!
17. 🤩 Get Excited: Your {product_name} is Almost Here!
18. 📫 {firstname}, Check Your Mailbox: Your Order Has Shipped!

Here are some email subject lines you can use when multiple products have been shipped:

1. Shipped : {product_name_limited} and {remaining} item(s)
2. Your {product_name} and More Have Shipped!
3. {firstname}, Your Order with {firstname} and More is on the Way!
4. Get Ready, {firstname}: Your Shipment with {product_name} and More is Coming!